Apparatus for building hollow concrete structures.



I J. H. McOOY. APPARATUS FOR BUILDING HOLLOW CONCRETE STRUCTURES.

APPLICATION FILED NOV. 25, 1908.

Patented Dec. 7. 1909.

UNE

JOHN H. McCOY, OF HARRISVILLE, PENNSYLVANIA.

APPARATUS FOR BUILDING HOLLOW CONCRETE STRUCTURES.

Specification of Letters Patent.

Eatented Dec. '7, 1969,

Application filed November 25, 1908. Serial No. 464,449.

To all whom "it may concern:

Be it' known that I, JOHN H. MCCOY, a citizen of the United States, residing at Harrisville, in the county of Butler and State of Pennsylvania, have invented certain new and useful In'iprovcments in Apparatus for Building Hollow Concrete Structures, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention refers to apparatus for building hollow structures of concrete such as silos, cisterns, walls, etc, and is designed for the purpose of providing anadjustable mechanism by which the walls of such structure, preferably cylindrical, may be built up of any desired thickness or internal diameter as to the structure itself, in an economical, rapid and convenient manner, and also to an improved construction of silo having a con-. i

tinuous vertical passageway.

Theparticular object of the invention is to provide means for successively lifting the sectional molding walls or shells, utilizing the already-built wall for the purpose of supporting the lifting structure, and to various other features of improvement as shall be more fully hereinafter set forth.

In the drawings accompanying the application: Figure l is a vertical sectional transverse view through the upper portion of a 1 silo in process, illustrating the wall molding apparatus and the supporting and raising mechanism therefor. Fig. 2 is a view in side elevation of the lifting mechanism. Fig. 5 is a horizontal plan view, partly in section, on the line III. III. of Fig. 1. Fig. 4 is a detail view, enlarged, of one of the interior bracing devices for the inner molding'wall. Fig. 5 is a detail view in pers )ective of one of the securing dogs for the lifting bar.

In the drawings 2 and 3 represent the inner and outer boundary or mold-ingwalls or shells of the apparatus, between which the wall 4 is molded, said boundary wal s consisting preferably of metal plates curved to the proper diameter and made in sections,

adapted to be vertically adjusted for each successive section of wall. These molding walls comprise an inner ring or shell 2 and an outer ring or shell 3 of: sheet metal con centrically arranged with an intervening space of the thickness of the wall to be built and are of suflicient depth to provide for -a considerable section of concrete being deposited between them. The molding walls are connected together in any suitable man ner as by the joint construction shown. in my prior patent No. 837101 dated November 27th,1906 and are preferably provided along their upper, or upper and lower edges with bracing angles 5. The joints of the molding shells 2 and 3 may be located at any de sired distance apart, the walls being preferably made in sections so as to considerably increase or decrease the diameter by adding or subtracting one or more sect-ions, and are bounded by terminal flanges 6 at each end of the plates. The outer sections are'connected by ,bolts 7 of suificient length to provide considerable latitude of adjustment, while the inner molding sections are braced apart by jack screws 8 having at one end a swivel-mounted head 9, a wrench-engaging enlargement 10, and a bearing nut 11 at the other end, the jack being adapted to be in serted between the flanges 6 and to adjust them and the sections apart.

The sections 2, 3, are raised from time to time by means of cross arms 12 engaging flanges 5 by means of readily attached and detached dogs 13 having an eye or loop 1d adapted to be inserted over the ends of the arms 12, one end of the dog bearing against the outer end of said arm and by the inner. end of the dog underneath flange 5, at each side, as clearly shown. Cross arm 12 is thus connected with both the molding sections and is lifted by a chain 15 engaging the cross arm at its middle portion, said chain being raised by any suitable mechan-.

ism, as hoisting gear 16 of Well known con struction; said hoisting gear being in turn supported downwardly from an upper cross bar 17 by bolt 18.

As the wall sections i are built upwardly,

I build up within them vertical sections 19 of rod or pipe form, each additional section being connected as by a sleeve 10111i3, with the last adjacent section at or about the upper level of the wall, as clearly indicated in Fig. 1, such sections having portions extending upwardly suifiiciently high to provide a hearing at each s idefor cross bar 17 which restsupon caps 20 so ,as to provide a good flatbearing at each side. (naps 2O are re moved after each operation, and an addi- 'tional section added, bars 17 raised, and the wall sections 2 and 3 being lifted, after having been loosened from the last precede ing wall section and located in position for the next operation.

An additional feature of improvement consists in a continuous door-way opening.

doors .laid along the interior fitting into rabbets 25 at each side, will'contain the contents of the silo when filled, retaining it against spreading, while permitting of theremoval of the turn buckle connections successively from the top downwardly as the silo is gradually emptied of its contents.

This latter feature is one of importance and advantage in that it greatly contributes to facilitating the operation and use ofthe complete structure, avoiding the necessity of any permanent cross arms or. sections, so that a walk-way is provided through the wall at any point corresponding to the level of the contents without obstruction.

The construction and operation of my improved apparatus and the advanta es of the resulting structure will be a precia those familiar with this 0 ass of buildin construction. It will be understood that it is in no way limited as to diameter, number of lifting parts, size or other details, but that various changes or modifications'may be made by the skilled mechanic within the scope of the following claims.

\Vhat I claim is 1. In the manufacture of annular concrete walls, the combination with supportingelements set in the wall, and continuous annular sectional molding shells adapted to embrace the wall cavity having means for adjusting their diameter; of hoisting mechanism supported on said elements and provided with cross armshaving separable holding dogs each having a holding loop for connecting the cross arms with the molding shell, substantially as set forth.

ad by all.

aeaaoa 2. in the inanfacture of annular' concrete Walls, the combination with supporting elements set in the walls in pairs, and continu ous annular sectional-molding shells adapted to embrace the wall cavity having means for adjusting their diameters; of cross arms mountcd on the tops of said elements, and holding mechanism depending from said bars and providedwith cross arms and separable holding dogs each having loops embracing the terminals ofthe cross arms and engaging the molding shells, substantially as set forth.

3. The combination with molding shells havingterminal flanges, of across arm, dogs each having a loop adapted to engage and connect said cross arm with one of saidfianges, and means for exerting power on the cross arm, substantia forth.

4. The combination with. molding shells having terminal flanges, of a cross arm, dogs each having a loop adapted to engage and lifting ly as set connect said cross arm with one of said i 5. In the manufactureof annular concrete walls, the combination with upwardly extending vertical posts built in the wall having supportingterminal caps, and embracing annular adjustable molding shells hav- 1 ing terminal flanges; of .cross supporting bars set on said caps, hoisting mechanism depending from said bars each having a termmal cross arm, and separable secur ng dogs each having a link embracing the cross arm and a shoe portion adapted to engage one of said flanges and the under side of the cross arm, substantially as set forth.

- 6. In the manufacture of annular concrete walls, the combination with u wa-rdly extending vertical posts built in the wall having supporting terminal caps at their tops and ends embracing annular adjusting molding shells having, terminal flanges; of cross ,supporting bars set on said caps, hoisting mechanism depending from said bars 'each having a terminal cross arm, and sep-' arable securing dogs each having a link em-, bracing the cross arms and a shoe portion adapted to engage one of said flanges and the under side of the cross arm, substantially as set forth.

composed of a solid annular Wall; thecombination with-supporting post sections and coupling devices therefor set in and built upwardly with the wall in pairs, and cont nuous annular interior and exterior sectlonal'molding shells adapted to embrace the wall cavity, and jack screws having station- 7. In the manufacture of cylindricalsilos ary enci member's engaging 511:: #321515 in? the bars; and, the upper and 015 #521551 mo'iding' intercir'nr shells and baits Qngaging the ends shells substantial 5% 01 in 1 of thmexterior shell is: adgusziilg theip tesiimonv wimreof I my signature (1 ameters, of crass bars se; 11pm the "mpg said pairs of posts, heisiing mechanism M] 151.. MOO YE. pending ti'lerelfmn s cross bars csnwnecfiw'efi with tziesses;

- said heisiing mechanism, am} (iv-gs each imv- {l M; mg :1 link ihe. ands szuci cross CHAS. LEHEYJ 

